Fig. 3.
srGAP1 is a Robo1-interacting protein in CRC. a srGAP1 interacted with Robo1. Coimmunoprecipitation was performed to detect the interaction of Robo1-HA with srGAP1-GFP in LoVo cells transfected with Robo1-HA, srGAP1-GFP. Immunoprecipitates and total cell lysates (TCL) were immunoblotted with antibodies as indicated. b srGAP1 could indirectly interact with USP33 through Robo1. Coimmunoprecipitation was performed to detect the interaction of srGAP1-GFP with Robo1, GFP-USP33 in LoVo and HCT116 cells. srGAP1 could interact with USP33 in LoVo cells expressing endogenetic Robo1 but not in HCT116 cells without endogenetic Robo1 expression. c srGAP1 showed similar subcelluar localization as Robo1 in Slit2-treated CRC cells